2. =Úlmus montàna=, Bauh. (SCOTCH OR WITCH ELM.) Leaves broad, obovate, abruptly pointed and doubly serrated. Fruit rounded, with a slightly notched wing, naked. Branches drooping at their extremity, their bark smooth and even. A medium-sized tree, 50 to 60 ft. high, with spreading or often drooping branches; extensively cultivated under a dozen different names, among the most peculiar being the White-margined (var. _alba marginata_), the Crisped-leaved (var. _crispa_), and the Weeping (var. _pendula_) Elms. [Illustration: U. campéstris.] 3. =Úlmus campéstris=, L. (ENGLISH OR FIELD ELM.) Leaves much smaller and of a darker color than the American Elm, obovate-oblong, abruptly sharp-pointed, doubly serrated, rough. Fruit smooth, with the wing deeply notched. A tall and beautiful cultivated tree, with the branches growing out from the trunk more abruptly than those of the American Elm, and thus forming a more pyramidal tree. A score of named varieties are in cultivation in this country, some with very corky bark, others with curled leaves, and still others with weeping branches. [Illustration: U. racemòsa.] 4. =Úlmus racemòsa=, Thomas. (CORK OR ROCK ELM.) Leaves 2 to 4 in. long, obovate-oblong, abruptly pointed, often doubly serrated, with very straight veins; twigs and bud-scales downy-ciliate; branches often with corky ridges. Fruit large (½ in. or more long), with a deep notch; hairy. A large tree with fine-grained, heavy and very tough wood. Southwest Vermont, west and south, southwestward to Missouri, on river-banks. [Illustration: U. alàta.] 5. =Úlmus alàta=, Michx. (WAHOO OR WINGED ELM.) Leaves small, 1 to 2 in. long, ovate-oblong or oblong-lanceolate, acute, thickish, downy beneath and nearly smooth above, sharply serrate. Bud-scales and branchlets nearly smooth. Notch in the wing of the fruit deep. A small tree, 30 to 40 ft. high, the branches having corky wings. Wild, Virginia, west and south; rarely cultivated. [Illustration: U. Americàna.] 6. =Úlmus Americàna=, L. (AMERICAN OR WHITE ELM.) Leaves 2 to 4 in. long, obovate-oblong or oval, abruptly sharp-pointed, sharply and often doubly serrated, soft-pubescent beneath when young, soon quite smooth; buds and branchlets smooth. Fruit ½ in. long, its sharp points incurved and closing the deep notch; hairy only on the edges. A large ornamental tree, usually with spreading branches and drooping branchlets, forming a very wide-spreading top. Wild throughout in rich, moist soil; common in cultivation. GENUS =75. PLÁNERA.= Trees or tall shrubs with alternate, simple, pointed, 2-ranked, feather-veined, toothed leaves. Flowers inconspicuous, with the leaves in spring. Fruit a small, nut-like, scaly, globular drupe, ripe in autumn. Bark scaling off like that of the Sycamore. [Illustration: P. aquática.]